The sources of magical power in the Malazan world, alternate dimensions or pathways that mages access to fuel their sorcery. Each Warren has a distinct character: Meanas (shadow and illusion), Mockra (the mind), Denul (healing), Thyr (light), Telas (fire), Rashan (darkness), D'riss (stone and earth), Ruse (the sea), Serc (air), and Hood's Path (death). High Mages can access multiple Warrens. The Elder Warrens (Kurald Galain, Kurald Emurlahn, Tellann, Omtose Phellack, Starvald Demelain) predate the current age and are far more powerful.